A group of Saudi officials, workers and journalists inspect the damage at a power station on August 27, 2016 in the Saudi border city of Najran, a day after it was struck by a rocket fired from Yemen. (Photo by AFP)

The Yemeni army and popular committees have launched a retaliatory artillery attack against a Saudi military base in the kingdom’s southwestern province of Jizan, killing at least four soldiers.

According to Yemen’s al-Masirah news website, Yemeni forces fired artillery shells at the military base of Abadiyah in Jizan on Monday, killing four Saudi forces.

Also on Monday, the Yemeni artillery shells hit the Saudi military base of Bahtit in the same province.

The artillery attacks are carried out in retaliation for Riyadh’s relentless airstrikes on the impoverished nation of Yemen.

The kingdom’s warplanes on Monday pounded the district of Nihm, east of the capital, Sana’a, and Dhubab in the southwestern province of Ta’izz.

Yemenis check the destruction following an airstrike by Saudi warplanes in the capital, Sana'a, on September 4, 2016. (Photo by AFP)

Saudi fighter jets also bombed the districts of Baqim, Munabbih and Razih in the northwestern province of Sa’ada.

On Sunday evening, Riyadh’s air raids targeted a residential building in Sahar district in the same province, killing 10 people and injuring eight others.

In a separate development, Yemeni forces killed and injured several Saudi-backed militants, including commanders, in an ambush in Yemen’s province of Jawf early on Monday.

The mercenaries were ambushed in an area in the district of Khabb & Sha'af in Jawf.

Saudi Arabia has been incessantly pounding Yemen since March 2015, with the UN putting the toll at 10,000. The offensive was launched to reinstate Abd Rabbuh Mansur Hadi, a Saudi ally who has resigned as Yemen’s president.